Pickling corrosion inhibitor is a chemical additive used in the pickling process of metal surfaces, and its main functions are as follows:
Corrosion inhibition effect: Acid pickling corrosion inhibitors contain specific inhibitor components that can react with metal ions in acidic solutions to form a protective film covering the metal surface. This thin film can prevent further corrosion of metal surfaces by acid solutions and reduce metal loss.
Cleaning effect: Acid pickling corrosion inhibitors can effectively remove oxides, rust, dirt, and other impurities on metal surfaces. It can react chemically with these impurities to dissolve or disperse them in acidic solutions, thereby cleaning the metal surface.
Surface activation: Acid pickling corrosion inhibitors can also activate metal surfaces. It can remove metal oxide layers, expose fresh metal surfaces, improve the reactivity and adhesion of metal surfaces, and is beneficial for subsequent coating or treatment processes.
Removing the tendency of stress corrosion cracking: Acid pickling corrosion inhibitors can effectively remove the tendency of stress corrosion cracking on metal surfaces. By eliminating stress concentration and small cracks on the metal surface, the risk of stress corrosion cracking of the metal during use is reduced.
In summary, pickling corrosion inhibitors play an important role in inhibiting corrosion, cleaning, surface activation, and removing stress corrosion cracking tendencies during the pickling process of metal surfaces. They can improve the quality and performance of metal surfaces and provide a better foundation for subsequent coating, processing, or use.